Mon 15 Sep 2008
I recently read about a really interesting experiment called the ultimatum game. It goes like this: person A is given 10 one-dollar bills and can offer person B any number of them. B can then either accept or reject A’s offer. If B accepts, A and B get what was offered. If on the other hand B turns the offer down, each person gets nothing.
What makes this experiment so interesting? Well, if human beings really were ‘rationally self-interested invidividuals’- the homines economici of classical economic theory- then the game should go like this: A should only offer B 1 dollar and hang on to the rest. And B should accept A’s offer, since getting 1 dollar is better than nothing.
So is that what actually happens? No, not at all. Practice has shown that most A players offer B close to half the total. And B players who are offered only one or two dollars generally turn the offer down. Amazing, isn’t it? Even in a simple game like the ultimatum game, it seems that people are not primarily motivated by greed and self-interest but rather by values like ‘fairness’. Maybe it’s time at last to say goodbye to the homo economicus model and welcome in homo ethicus.